Parallel Interface Sp Ecifications; Forw Ard Channel; Reverse Channel - Epson LQ-670 User Manual

Pa rallel Interfa ce Specifications
The p rinter com es w ith a bidirectional, 8-bit, parallel interface and an
op tional interface slot.
Forwa rd cha nnel
Transm ission m ode:
Ad ap table connector:
Synchronization:
H and shaking:
Signal level:
Reverse cha nnel
Transm ission m od e:
Ad ap table connector:
Synchronization:
H and shaking:
Signal level:
Data transm ission
tim ing:
Extensibility requ est:
A-12
Specifications
8-bit parallel, IEEE-1284 com patibility
m od e
57-30360 (Am phenol) or equivalent
STROBE pulse
BUSY and ACKN LG signals
TTL com patible (IEEE-1284 level 1 d evice)
IEEE-1284 N ibble Mod e
57-30360 (Am phenol) or equivalent
Refer to the IEEE-1284 specification
Refer to the IEEE-1284 specification
IEEE-1284 Level 1 device
Refer to the IEEE-1284 specification
The printer respond s to the extensibility
request in the affirm ative w hen the
request is 00H or 04H , w hich m eans:
00H : Request nibble m od e of reverse channel
transfer
04H : Requ est d evice ID in nibble m od e of
reverse channel transfer